1 /*
2 * Copyright (c) 2021, 2025, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 package compiler.lib.ir_framework;
25
26 import compiler.lib.ir_framework.driver.FlagVMProcess;
27 import compiler.lib.ir_framework.driver.TestVMException;
28 import compiler.lib.ir_framework.driver.TestVMProcess;
29 import compiler.lib.ir_framework.driver.irmatching.IRMatcher;
30 import compiler.lib.ir_framework.driver.irmatching.IRViolationException;
31 import compiler.lib.ir_framework.driver.irmatching.Matchable;
32 import compiler.lib.ir_framework.driver.irmatching.parser.TestClassParser;
33 import compiler.lib.ir_framework.shared.*;
34 import compiler.lib.ir_framework.test.TestVM;
35 import jdk.test.lib.Platform;
36 import jdk.test.lib.Utils;
37 import jdk.test.lib.helpers.ClassFileInstaller;
38 import jdk.test.whitebox.WhiteBox;
39
40 import java.io.PrintWriter;
41 import java.io.StringWriter;
42 import java.lang.reflect.Method;
43 import java.net.MalformedURLException;
44 import java.net.URL;
45 import java.net.URLClassLoader;
46 import java.nio.file.Path;
47 import java.util.*;
48 import java.util.stream.Collectors;
49
50 /**
51 * This class represents the main entry point to the test framework whose main purpose is to perform regex-based checks on
52 * the C2 IR shape emitted by the VM flags {@code -XX:+PrintIdeal} and {@code -XX:+PrintOptoAssembly}. The framework can
53 * also be used for other non-IR matching (and non-compiler) tests by providing easy to use annotations for commonly used
54 * testing patterns and compiler control flags.
55 * <p>
56 * The framework offers various annotations to control how your test code should be invoked and being checked. There are
57 * three kinds of tests depending on how much control is needed over the test invocation:
58 * <b>Base tests</b> (see {@link Test}), <b>checked tests</b> (see {@link Check}), and <b>custom run tests</b>
59 * (see {@link Run}). Each type of test needs to define a unique <i>test method</i> that specifies a {@link Test @Test}
60 * annotation which represents the test code that is eventually executed by the test framework. More information about
61 * the usage and how to write different tests can be found in {@link Test}, {@link Check}, and {@link Run}.
62 * <p>
63 * Each test method can specify an arbitrary number of IR rules. This is done by using {@link IR @IR} annotations which
64 * can define regex strings that are matched on the output of {@code -XX:+PrintIdeal} and {@code -XX:+PrintOptoAssembly}.
65 * The matching is done after the test method was (optionally) warmed up and compiled. More information about the usage
66 * and how to write different IR rules can be found at {@link IR}.
67 * <p>
68 * This framework should be used with the following JTreg setup in your Test.java file in package <i>some.package</i>:
69 * <pre>
70 * {@literal @}library /test/lib
71 * {@literal @}run driver some.package.Test
72 * </pre>
73 * Note that even though the framework uses the Whitebox API internally, it is not required to build and enabel it in the
74 * JTreg test if the test itself is not utilizing any Whitebox features directly.
75 * <p>
76 * To specify additional flags, use {@link #runWithFlags(String...)}, {@link #addFlags(String...)}, or
77 * {@link #addScenarios(Scenario...)} where the scenarios can also be used to run different flag combinations
78 * (instead of specifying multiple JTreg {@code @run} entries).
79 * <p>
80 * After annotating your test code with the framework specific annotations, the framework needs to be invoked from the
81 * {@code main()} method of your JTreg test. There are two ways to do so. The first way is by calling the various
82 * {@code runXX()} methods of {@link TestFramework}. The second way, which gives more control, is to create a new
83 * {@code TestFramework} builder object on which {@link #start()} needs to be eventually called to start the testing.
84 * <p>
85 * The framework is called from the <i>driver VM</i> in which the JTreg test is initially run by specifying {@code
86 * @run driver} in the JTreg header. This strips all additionally specified JTreg VM and Javaoptions.
87 * The framework creates a new <i>flag VM</i> with all these flags added again in order to figure out which flags are
88 * required to run the tests specified in the test class (e.g. {@code -XX:+PrintIdeal} and {@code -XX:+PrintOptoAssembly}
89 * for IR matching).
90 * <p>
91 * After the flag VM terminates, it starts a new <i>test VM</i> which performs the execution of the specified
92 * tests in the test class as described in {@link Test}, {@link Check}, and {@link Run}.
93 * <p>
94 * In a last step, once the test VM has terminated without exceptions, IR matching is performed if there are any IR
95 * rules and if no VM flags disable it (e.g. not running with {@code -Xint}, see {@link IR} for more details).
96 * The IR regex matching is done on the output of {@code -XX:+PrintIdeal} and {@code -XX:+PrintOptoAssembly} by parsing
97 * the hotspot_pid file of the test VM. Failing IR rules are reported by throwing a {@link IRViolationException}.
98 *
99 * @see Test
100 * @see Check
101 * @see Run
102 * @see IR
103 */
104 public class TestFramework {
105 /**
106 * JTreg can define additional VM (-Dtest.vm.opts) and Javaoptions (-Dtest.java.opts) flags. IR verification is only
107 * performed when all these additional JTreg flags (does not include additionally added framework and scenario flags
108 * by user code) are whitelisted.
109 *
110 * <p>
111 * A flag is whitelisted if it is a property flag (starting with -D), -ea, -esa, or if the flag name contains any of
112 * the entries of this list as a substring (partial match).
113 */
114 public static final Set<String> JTREG_WHITELIST_FLAGS = new HashSet<>(
115 Arrays.asList(
116 // The following substrings are part of more than one VM flag
117 "RAM",
118 "Heap",
119 "Trace",
120 "Print",
121 "Verify",
122 "UseNewCode",
123 "Xmn",
124 "Xms",
125 "Xmx",
126 "Xss",
127 // The following substrings are only part of one VM flag (=exact match)
128 "CreateCoredumpOnCrash",
129 "IgnoreUnrecognizedVMOptions",
130 "UnlockDiagnosticVMOptions",
131 "UnlockExperimentalVMOptions",
132 "BackgroundCompilation",
133 "Xbatch",
134 "TieredCompilation",
135 "CompileThreshold",
136 "Xmixed",
137 "server",
138 "AlignVector",
139 "UseAVX",
140 "UseSSE",
141 "UseSVE",
142 "Xlog",
143 "LogCompilation",
144 "UseCompactObjectHeaders",
145 // Riscv
146 "UseRVV",
147 "UseZbb",
148 "UseZfh",
149 "UseZicond",
150 "UseZvbb"
151 )
152 );
153
154 public static final boolean VERBOSE = Boolean.getBoolean("Verbose");
155 public static final boolean PRINT_RULE_MATCHING_TIME = Boolean.getBoolean("PrintRuleMatchingTime");
156 public static final boolean TESTLIST = !System.getProperty("Test", "").isEmpty();
157 public static final boolean EXCLUDELIST = !System.getProperty("Exclude", "").isEmpty();
158 private static final boolean REPORT_STDOUT = Boolean.getBoolean("ReportStdout");
159 // Only used for internal testing and should not be used for normal user testing.
160
161 private static final String RERUN_HINT = """
162 #############################################################
163 - To only run the failed tests use -DTest, -DExclude,
164 and/or -DScenarios.
165 - To also get the standard output of the test VM run with
166 -DReportStdout=true or for even more fine-grained logging
167 use -DVerbose=true.
168 #############################################################
169 """ + System.lineSeparator();
170
171 private boolean irVerificationPossible = Boolean.parseBoolean(System.getProperty("VerifyIR", "true"));
172 private boolean shouldVerifyIR; // Should we perform IR matching?
173 private static boolean toggleBool;
174
175 private final Class<?> testClass;
176 private Set<Class<?>> helperClasses;
177 private List<Scenario> scenarios;
178 private Set<Integer> scenarioIndices;
179 private List<String> flags;
180 private int defaultWarmup = -1;
181 private boolean testClassesOnBootClassPath;
182 private boolean isAllowNotCompilable = false;
183
184 /*
185 * Public interface methods
186 */
187
188 /**
189 * Creates an instance acting as a builder to test the class from which this constructor was invoked from.
190 * Use this constructor if you want to use multiple run options (flags, helper classes, scenarios).
191 * Use the associated add methods ({@link #addFlags(String...)}, {@link #addScenarios(Scenario...)},
192 * {@link #addHelperClasses(Class...)}) to set up everything and then start the testing by invoking {@link #start()}.
193 */
194 public TestFramework() {
195 this(StackWalker.getInstance(StackWalker.Option.RETAIN_CLASS_REFERENCE).getCallerClass());
196 }
197
198 /**
199 * Creates an instance acting as a builder to test {@code testClass}.
200 * Use this constructor if you want to use multiple run options (flags, helper classes, scenarios).
201 * Use the associated add methods ({@link #addFlags(String...)}, {@link #addScenarios(Scenario...)},
202 * {@link #addHelperClasses(Class...)}) to set up everything and then start the testing by invoking {@link #start()}.
203 *
204 * @param testClass the class to be tested by the framework.
205 * @see #TestFramework()
206 */
207 public TestFramework(Class<?> testClass) {
208 TestRun.check(testClass != null, "Test class cannot be null");
209 this.testClass = testClass;
210 if (VERBOSE) {
211 System.out.println("Test class: " + testClass);
212 }
213 }
214
215 /**
216 * Tests the class from which this method was invoked from.
217 */
218 public static void run() {
219 StackWalker walker = StackWalker.getInstance(StackWalker.Option.RETAIN_CLASS_REFERENCE);
220 run(walker.getCallerClass());
221 }
222
223 /**
224 * Tests {@code testClass}.
225 *
226 * @param testClass the class to be tested by the framework.
227 * @see #run()
228 */
229 public static void run(Class<?> testClass) {
230 TestFramework framework = new TestFramework(testClass);
231 framework.start();
232 }
233
234 /**
235 * Tests the class from which this method was invoked from. The test VM is called with the specified {@code flags}.
236 * <ul>
237 * <li><p>The {@code flags} override any set VM or Javaoptions flags by JTreg by default.<p>
238 * Use {@code -DPreferCommandLineFlags=true} if you want to prefer the JTreg VM and Javaoptions flags over
239 * the specified {@code flags} of this method.</li>
240 * <li><p>If you want to run your entire JTreg test with additional flags, use this method.</li>
241 * <li><p>If you want to run your entire JTreg test with additional flags but for another test class then the one
242 * from which this method was called from, use {@link #addFlags(String...)}, use this method.</li>
243 * <li><p>If you want to run your JTreg test with multiple flag combinations, use
244 * {@link #addScenarios(Scenario...)}</li>
245 * </ul>
246 *
247 * @param flags VM flags to be used for the test VM.
248 */
249 public static void runWithFlags(String... flags) {
250 StackWalker walker = StackWalker.getInstance(StackWalker.Option.RETAIN_CLASS_REFERENCE);
251 TestFramework framework = new TestFramework(walker.getCallerClass());
252 framework.addFlags(flags);
253 framework.start();
254 }
255
256 /**
257 * Add VM flags to be used for the test VM. These flags override any VM or Javaoptions set by JTreg by default.<p>
258 * Use {@code -DPreferCommandLineFlags=true} if you want to prefer the VM or Javaoptions over the scenario flags.
259 *
260 * <p>
261 * The testing can be started by invoking {@link #start()}
262 *
263 * @param flags VM options to be applied to the test VM.
264 * @return the same framework instance.
265 */
266 public TestFramework addFlags(String... flags) {
267 TestRun.check(flags != null && Arrays.stream(flags).noneMatch(Objects::isNull), "A flag cannot be null");
268 if (this.flags == null) {
269 this.flags = new ArrayList<>();
270 }
271 this.flags.addAll(Arrays.asList(flags));
272 return this;
273 }
274
275 /**
276 * Add helper classes that can specify additional compile command annotations ({@link ForceCompile @ForceCompile},
277 * {@link DontCompile @DontCompile}, {@link ForceInline @ForceInline}, {@link DontInline @DontInline}) to be applied
278 * while testing {@code testClass} (also see description of {@link TestFramework}).
279 *
280 * <p>
281 * Duplicates in {@code helperClasses} are ignored. If a class is used by the test class that does not specify any
282 * compile command annotations, you do not need to include it with this method. If no helper class specifies any
283 * compile commands, you do not need to call this method at all.
284 *
285 * <p>
286 * The testing can be started by invoking {@link #start()}.
287 *
288 * @param helperClasses helper classes containing compile command annotations ({@link ForceCompile},
289 * {@link DontCompile}, {@link ForceInline}, {@link DontInline}) to be applied
290 * while testing {@code testClass} (also see description of {@link TestFramework}).
291 * @return the same framework instance.
292 */
293 public TestFramework addHelperClasses(Class<?>... helperClasses) {
294 TestRun.check(helperClasses != null && Arrays.stream(helperClasses).noneMatch(Objects::isNull),
295 "A Helper class cannot be null");
296 if (this.helperClasses == null) {
297 this.helperClasses = new HashSet<>();
298 }
299
300 this.helperClasses.addAll(Arrays.asList(helperClasses));
301 return this;
302 }
303
304 /**
305 * Add scenarios to be used for the test VM. A test VM is called for each scenario in {@code scenarios} by using the
306 * specified VM flags in the scenario. The scenario flags override any flags set by {@link #addFlags(String...)}
307 * and thus also override any VM or Javaoptions set by JTreg by default.<p>
308 * Use {@code -DPreferCommandLineFlags=true} if you want to prefer the VM and Javaoptions over the scenario flags.
309 *
310 * <p>
311 * The testing can be started by invoking {@link #start()}
312 *
313 * @param scenarios scenarios which specify specific flags for the test VM.
314 * @return the same framework instance.
315 */
316 public TestFramework addScenarios(Scenario... scenarios) {
317 TestFormat.checkAndReport(scenarios != null && Arrays.stream(scenarios).noneMatch(Objects::isNull),
318 "A scenario cannot be null");
319 if (this.scenarios == null) {
320 this.scenarios = new ArrayList<>();
321 this.scenarioIndices = new HashSet<>();
322 }
323
324 for (Scenario scenario : scenarios) {
325 int scenarioIndex = scenario.getIndex();
326 TestFormat.checkNoThrow(scenarioIndices.add(scenarioIndex),
327 "Cannot define two scenarios with the same index " + scenarioIndex);
328 this.scenarios.add(scenario);
329 }
330 TestFormat.throwIfAnyFailures();
331 return this;
332 }
333
334 /**
335 * Add test classes to boot classpath. This adds all classes found on path {@link jdk.test.lib.Utils#TEST_CLASSES}
336 * to the boot classpath with "-Xbootclasspath/a". This is useful when trying to run tests in a privileged mode.
337 */
338 public TestFramework addTestClassesToBootClassPath() {
339 this.testClassesOnBootClassPath = true;
340 return this;
341 }
342
343 /**
344 * Start the testing of the implicitly (by {@link #TestFramework()}) or explicitly (by {@link #TestFramework(Class)})
345 * set test class.
346 */
347 public void start() {
348 if (shouldInstallWhiteBox()) {
349 installWhiteBox();
350 }
351 checkIRRuleCompilePhasesFormat();
352 disableIRVerificationIfNotFeasible();
353
354 if (scenarios == null) {
355 try {
356 start(null);
357 } catch (TestVMException e) {
358 System.err.println(System.lineSeparator() + e.getExceptionInfo() + RERUN_HINT);
359 throw e;
360 } catch (IRViolationException e) {
361 System.out.println(e.getCompilations());
362 System.err.println(System.lineSeparator() + e.getExceptionInfo() + System.lineSeparator() + RERUN_HINT);
363 throw e;
364 }
365 } else {
366 startWithScenarios();
367 }
368 }
369
370 private void checkIRRuleCompilePhasesFormat() {
371 for (Method method : testClass.getDeclaredMethods()) {
372 for (IR irAnno : method.getAnnotationsByType(IR.class)) {
373 TestFormat.checkNoThrow(irAnno.phase().length > 0,
374 "@IR rule " + irAnno + " must specify a non-empty list of compile " +
375 "phases \"phase\" at " + method);
376 }
377 }
378 TestFormat.throwIfAnyFailures();
379 }
380
381 /**
382 * Try to load the Whitebox class from the user directory with a custom class loader. If the user has already built the
383 * Whitebox, we can load it. Otherwise, the framework needs to install it.
384 *
385 * @return true if the framework needs to install the Whitebox
386 */
387 private boolean shouldInstallWhiteBox() {
388 try {
389 URL url = Path.of(System.getProperty("user.dir")).toUri().toURL();
390 URLClassLoader userDirClassLoader =
391 URLClassLoader.newInstance(new URL[] {url}, TestFramework.class.getClassLoader().getParent());
392 Class.forName(WhiteBox.class.getName(), false, userDirClassLoader);
393 } catch (MalformedURLException e) {
394 throw new TestFrameworkException("corrupted user.dir property", e);
395 } catch (ClassNotFoundException e) {
396 // We need to manually install the WhiteBox if we cannot load the WhiteBox class from the user directory.
397 // This happens when the user test does not explicitly install the WhiteBox as part of the test.
398 return true;
399 }
400 return false;
401 }
402
403 /**
404 * Set a new default warm-up (overriding the framework default of 2000 at
405 * {@link TestVM#WARMUP_ITERATIONS}) to be applied for all tests that do not specify an explicit
406 * warm-up with {@link Warmup @Warmup}.
407 *
408 * @param defaultWarmup a new non-negative default warm-up.
409 * @return the same framework instance.
410 */
411 public TestFramework setDefaultWarmup(int defaultWarmup) {
412 TestFormat.checkAndReport(defaultWarmup >= 0, "Cannot specify a negative default warm-up");
413 this.defaultWarmup = defaultWarmup;
414 return this;
415 }
416
417 /**
418 * In rare cases, methods may not be compilable because of a compilation bailout. By default, this leads to a
419 * test failure. However, if such cases are expected in multiple methods in a test class, this flag can be set to
420 * true, which allows any test to pass even if there is a compilation bailout. If only selected methods are prone
421 * to bail out, it is preferred to use {@link Test#allowNotCompilable()} instead for more fine-grained control.
422 * By setting this flag, any associated {@link IR} rule of a test is only executed if the test method was compiled,
423 * and else it is ignored silently.
424 */
425 public TestFramework allowNotCompilable() {
426 this.isAllowNotCompilable = true;
427 return this;
428 }
429
430 /**
431 * Get the VM output of the test VM. Use {@code -DVerbose=true} to enable more debug information. If scenarios
432 * were run, use {@link Scenario#getTestVMOutput()}.
433 *
434 * @return the last test VM output.
435 */
436 public static String getLastTestVMOutput() {
437 return TestVMProcess.getLastTestVMOutput();
438 }
439
440 /*
441 * The following methods are only intended to be called from actual @Test methods and not from the main() method of
442 * a JTreg test. Calling these methods from main() results in a linking exception (Whitebox not yet loaded and enabled).
443 */
444
445 /**
446 * Compile {@code m} at compilation level {@code compLevel}. {@code m} is first enqueued and might not be compiled,
447 * yet, upon returning from this method.
448 *
449 * @param m the method to be compiled.
450 * @param compLevel the (valid) compilation level at which the method should be compiled.
451 * @throws TestRunException if compilation level is {@link CompLevel#SKIP} or {@link CompLevel#WAIT_FOR_COMPILATION}.
452 */
453 public static void compile(Method m, CompLevel compLevel) {
454 TestVM.compile(m, compLevel);
455 }
456
457 /**
458 * Deoptimize {@code m}.
459 *
460 * @param m the method to be deoptimized.
461 */
462 public static void deoptimize(Method m) {
463 TestVM.deoptimize(m);
464 }
465
466 /**
467 * Returns a boolean indicating if {@code m} is compiled at any level.
468 *
469 * @param m the method to be checked.
470 * @return {@code true} if {@code m} is compiled at any level;
471 * {@code false} otherwise.
472 */
473 public static boolean isCompiled(Method m) {
474 return TestVM.isCompiled(m);
475 }
476
477 /**
478 * Returns a boolean indicating if {@code m} is compiled with C1.
479 *
480 * @param m the method to be checked.
481 * @return {@code true} if {@code m} is compiled with C1;
482 * {@code false} otherwise.
483 */
484 public static boolean isC1Compiled(Method m) {
485 return TestVM.isC1Compiled(m);
486 }
487
488 /**
489 * Returns a boolean indicating if {@code m} is compiled with C2.
490 *
491 * @param m the method to be checked.
492 * @return {@code true} if {@code m} is compiled with C2;
493 * {@code false} otherwise.
494 */
495 public static boolean isC2Compiled(Method m) {
496 return TestVM.isC2Compiled(m);
497 }
498
499 /**
500 * Returns a boolean indicating if {@code m} is compiled at the specified {@code compLevel}.
501 *
502 * @param m the method to be checked.
503 * @param compLevel the compilation level.
504 * @return {@code true} if {@code m} is compiled at {@code compLevel};
505 * {@code false} otherwise.
506 */
507 public static boolean isCompiledAtLevel(Method m, CompLevel compLevel) {
508 return TestVM.isCompiledAtLevel(m, compLevel);
509 }
510
511 /**
512 * Checks if {@code m} is compiled at any level.
513 *
514 * @param m the method to be checked.
515 * @throws TestRunException if {@code m} is not compiled at any level.
516 */
517 public static void assertCompiled(Method m) {
518 TestVM.assertCompiled(m);
519 }
520
521 /**
522 * Checks if {@code m} is not compiled at any level.
523 *
524 * @param m the method to be checked.
525 * @throws TestRunException if {@code m} is compiled at any level.
526 */
527 public static void assertNotCompiled(Method m) {
528 TestVM.assertNotCompiled(m);
529 }
530
531 /**
532 * Verifies that {@code m} is compiled with C1.
533 *
534 * @param m the method to be verified.
535 * @throws TestRunException if {@code m} is not compiled with C1.
536 */
537 public static void assertCompiledByC1(Method m) {
538 TestVM.assertCompiledByC1(m);
539 }
540
541 /**
542 * Verifies that {@code m} is compiled with C2.
543 *
544 * @param m the method to be checked.
545 * @throws TestRunException if {@code m} is not compiled with C2.
546 */
547 public static void assertCompiledByC2(Method m) {
548 TestVM.assertCompiledByC2(m);
549 }
550
551 /**
552 * Verifies that {@code m} is compiled at the specified {@code compLevel}.
553 *
554 * @param m the method to be checked.
555 * @param compLevel the compilation level.
556 * @throws TestRunException if {@code m} is not compiled at {@code compLevel}.
557 */
558 public static void assertCompiledAtLevel(Method m, CompLevel compLevel) {
559 TestVM.assertCompiledAtLevel(m, compLevel);
560 }
561
562 /**
563 * Verifies that {@code m} was deoptimized after being C1 compiled.
564 *
565 * @param m the method to be checked.
566 * @throws TestRunException if {@code m} is was not deoptimized after being C1 compiled.
567 */
568 public static void assertDeoptimizedByC1(Method m) {
569 TestVM.assertDeoptimizedByC1(m);
570 }
571
572 /**
573 * Verifies that {@code m} was deoptimized after being C2 compiled.
574 *
575 * @param m the method to be checked.
576 * @throws TestRunException if {@code m} is was not deoptimized after being C2 compiled.
577 */
578 public static void assertDeoptimizedByC2(Method m) {
579 TestVM.assertDeoptimizedByC2(m);
580 }
581
582 /**
583 * Checks if deopt of {@code m} is stable at the specified {@code compLevel}.
584 *
585 * @param m the method to be checked.
586 * @param compLevel the compilation level.
587 * @return {@code true} if deopt of {@code m} is stable at {@code compLevel};
588 * {@code false} otherwise.
589 */
590 public static boolean isStableDeopt(Method m, CompLevel compLevel) {
591 return TestVM.isStableDeopt(m, compLevel);
592 }
593
594 /**
595 * Returns a different boolean each time this method is invoked (switching between {@code false} and {@code true}).
596 * The very first invocation returns {@code false}. Note that this method could be used by different tests and
597 * thus the first invocation for a test could be {@code true} or {@code false} depending on how many times
598 * other tests have already invoked this method.
599 *
600 * @return an inverted boolean of the result of the last invocation of this method.
601 */
602 public static boolean toggleBoolean() {
603 toggleBool = !toggleBool;
604 return toggleBool;
605 }
606
607 /*
608 * End of public interface methods
609 */
610
611 /**
612 * Used to move Whitebox class to the right folder in the JTreg test
613 */
614 private void installWhiteBox() {
615 try {
616 ClassFileInstaller.main(WhiteBox.class.getName());
617 } catch (Exception e) {
618 throw new Error("failed to install whitebox classes", e);
619 }
620 }
621
622 /**
623 * Disable IR verification completely in certain cases.
624 */
625 private void disableIRVerificationIfNotFeasible() {
626 if (!irVerificationPossible) {
627 return;
628 }
629
630 boolean debugTest = Platform.isDebugBuild();
631 boolean intTest = !Platform.isInt();
632 boolean compTest = !Platform.isComp();
633 boolean irTest = hasIRAnnotations();
634 // No IR verification is done if additional non-whitelisted JTreg VM or Javaoptions flag is specified.
635 List<String> nonWhiteListedFlags = anyNonWhitelistedJTregVMAndJavaOptsFlags();
636 boolean nonWhiteListedTest = nonWhiteListedFlags.isEmpty();
637
638 irVerificationPossible = debugTest && intTest && compTest && irTest && nonWhiteListedTest;
639 if (irVerificationPossible) {
640 return;
641 }
642
643 System.out.println("IR verification disabled due to the following reason(s):");
644 if (!debugTest) {
645 System.out.println("- Not running a debug build (required for PrintIdeal and PrintOptoAssembly)");
646 }
647 if (!intTest) {
648 System.out.println("- Running with -Xint (no compilations)");
649 }
650 if (!compTest) {
651 System.out.println("- Running with -Xcomp (use warm-up of 0 instead)");
652 }
653 if (!irTest) {
654 System.out.println("- Test " + testClass + " not specifying any @IR annotations");
655 }
656 if (!nonWhiteListedTest) {
657 System.out.println("- Using non-whitelisted JTreg VM or Javaoptions flag(s):");
658 nonWhiteListedFlags.forEach((f) -> System.out.println(" - " + f));
659 }
660
661 System.out.println("");
662 }
663
664 /**
665 * For scenarios: Run the tests with the scenario settings and collect all exceptions to be able to run all
666 * scenarios without prematurely throwing an exception. Format violations, however, are wrong for all scenarios
667 * and thus is reported immediately on the first scenario execution.
668 */
669 private void startWithScenarios() {
670 Map<Scenario, Exception> exceptionMap = new TreeMap<>(Comparator.comparingInt(Scenario::getIndex));
671 for (Scenario scenario : scenarios) {
672 try {
673 start(scenario);
674 } catch (TestFormatException e) {
675 // Test format violation is wrong for all the scenarios. Only report once.
676 throw e;
677 } catch (Exception e) {
678 exceptionMap.put(scenario, e);
679 }
680 }
681 if (!exceptionMap.isEmpty()) {
682 reportScenarioFailures(exceptionMap);
683 }
684 }
685
686 private void reportScenarioFailures(Map<Scenario, Exception> exceptionMap) {
687 String failedScenarios = "The following scenarios have failed: #"
688 + exceptionMap.keySet().stream()
689 .map(s -> String.valueOf(s.getIndex()))
690 .collect(Collectors.joining(", #"));
691 StringBuilder builder = new StringBuilder(failedScenarios);
692 builder.append(System.lineSeparator()).append(System.lineSeparator());
693 for (Map.Entry<Scenario, Exception> entry : exceptionMap.entrySet()) {
694 Exception e = entry.getValue();
695 Scenario scenario = entry.getKey();
696 String errorMsg = "";
697 if (scenario != null) {
698 errorMsg = getScenarioTitleAndFlags(scenario);
699 }
700 if (e instanceof IRViolationException irException) {
701 // For IR violations, only show the actual violations and not the (uninteresting) stack trace.
702 if (scenario != null) {
703 System.out.println("Scenario #" + scenario.getIndex());
704 }
705 System.out.println(irException.getCompilations());
706 builder.append(errorMsg).append(System.lineSeparator()).append(irException.getExceptionInfo());
707 } else if (e instanceof TestVMException testVMException) {
708 builder.append(errorMsg).append(System.lineSeparator()).append(testVMException.getExceptionInfo());
709 } else {
710 // Print stack trace otherwise
711 StringWriter errors = new StringWriter();
712 e.printStackTrace(new PrintWriter(errors));
713 builder.append(errors);
714 }
715 builder.append(System.lineSeparator());
716 }
717 System.err.println(builder);
718 if (!VERBOSE && !REPORT_STDOUT && !TESTLIST && !EXCLUDELIST) {
719 // Provide a hint to the user how to get additional output/debugging information.
720 System.err.println(RERUN_HINT);
721 }
722 throw new TestRunException(failedScenarios + ". Please check stderr for more information.");
723 }
724
725 private static String getScenarioTitleAndFlags(Scenario scenario) {
726 StringBuilder builder = new StringBuilder();
727 String title = "Scenario #" + scenario.getIndex();
728 builder.append(title).append(System.lineSeparator()).append("=".repeat(title.length()))
729 .append(System.lineSeparator());
730 builder.append("Scenario flags: [").append(String.join(", ", scenario.getFlags())).append("]")
731 .append(System.lineSeparator());
732 return builder.toString();
733 }
734
735 /**
736 * Execute a separate "flag" VM with White Box access to determine all test VM flags. The flag VM sends an encoding of
737 * all required flags for the test VM to the driver VM over a socket. Once the flag VM exits, this driver VM parses the
738 * test VM flags, which also determine if IR matching should be done, and then starts the test VM to execute all tests.
739 */
740 private void start(Scenario scenario) {
741 if (scenario != null && !scenario.isEnabled()) {
742 System.out.println("Disabled scenario #" + scenario.getIndex() + "! This scenario is not present in set flag " +
743 "-DScenarios and is therefore not executed.");
744 return;
745 }
746 shouldVerifyIR = irVerificationPossible;
747 try {
748 // Use TestFramework flags and scenario flags for new VMs.
749 List<String> additionalFlags = new ArrayList<>();
750 if (flags != null) {
751 additionalFlags.addAll(flags);
752 }
753 if (scenario != null) {
754 List<String> scenarioFlags = scenario.getFlags();
755 String scenarioFlagsString = scenarioFlags.isEmpty() ? "" : " - [" + String.join(", ", scenarioFlags) + "]";
756 System.out.println("Scenario #" + scenario.getIndex() + scenarioFlagsString + ":");
757 additionalFlags.addAll(scenarioFlags);
758 }
759 String frameworkAndScenarioFlags = additionalFlags.isEmpty() ?
760 "" : " - [" + String.join(", ", additionalFlags) + "]";
761
762 if (shouldVerifyIR) {
763 // Only need to use flag VM if an IR verification is possibly done.
764 System.out.println("Run Flag VM:");
765 FlagVMProcess flagVMProcess = new FlagVMProcess(testClass, additionalFlags);
766 shouldVerifyIR = flagVMProcess.shouldVerifyIR();
767 if (shouldVerifyIR) {
768 // Add more flags for the test VM which are required to do IR verification.
769 additionalFlags.addAll(flagVMProcess.getTestVMFlags());
770 } // else: Flag VM found a reason to not do IR verification.
771 } else {
772 System.out.println("Skip Flag VM due to not performing IR verification.");
773 }
774
775 System.out.println("Run Test VM" + frameworkAndScenarioFlags + ":");
776 runTestVM(additionalFlags);
777 } finally {
778 if (scenario != null) {
779 scenario.setTestVMOutput(TestVMProcess.getLastTestVMOutput());
780 }
781 System.out.println();
782 }
783 }
784
785 private boolean hasIRAnnotations() {
786 return Arrays.stream(testClass.getDeclaredMethods()).anyMatch(m -> m.getAnnotationsByType(IR.class).length > 0);
787 }
788
789 private List<String> anyNonWhitelistedJTregVMAndJavaOptsFlags() {
790 List<String> flags = Arrays.stream(Utils.getTestJavaOpts())
791 .map(s -> s.replaceFirst("-XX:[+|-]?|-(?=[^D|^e])", ""))
792 .collect(Collectors.toList());
793 List<String> nonWhiteListedFlags = new ArrayList();
794 for (String flag : flags) {
795 // Property flags (prefix -D), -ea and -esa are whitelisted.
796 if (!flag.startsWith("-D") && !flag.startsWith("-e") && JTREG_WHITELIST_FLAGS.stream().noneMatch(flag::contains)) {
797 // Found VM flag that is not whitelisted
798 nonWhiteListedFlags.add(flag);
799 }
800 }
801 return nonWhiteListedFlags;
802 }
803
804 private void runTestVM(List<String> additionalFlags) {
805 TestVMProcess testVMProcess = new TestVMProcess(additionalFlags, testClass, helperClasses, defaultWarmup,
806 isAllowNotCompilable, testClassesOnBootClassPath);
807 if (shouldVerifyIR) {
808 try {
809 TestClassParser testClassParser = new TestClassParser(testClass, isAllowNotCompilable);
810 Matchable testClassMatchable = testClassParser.parse(testVMProcess.getHotspotPidFileName(),
811 testVMProcess.getIrEncoding());
812 IRMatcher matcher = new IRMatcher(testClassMatchable);
813 matcher.match();
814 } catch (IRViolationException e) {
815 e.addCommandLine(testVMProcess.getCommandLine());
816 throw e;
817 }
818 } else {
819 System.out.println("IR verification disabled either due to no @IR annotations, through explicitly setting " +
820 "-DVerify=false, due to not running a debug build, using a non-whitelisted JTreg VM or " +
821 "Javaopts flag like -Xint, or running the test VM with other VM flags added by user code " +
822 "that make the IR verification impossible (e.g. -XX:-UseCompile, " +
823 "-XX:TieredStopAtLevel=[1,2,3], etc.).");
824 }
825 }
826
827 public static void check(boolean test, String failureMessage) {
828 if (!test) {
829 throw new TestFrameworkException(failureMessage);
830 }
831 }
832 }